44644

Appears in sequences

• Palindromes expressible as the sum of 4 consecutive palindromes.at n=7A046499
• a(n) = smallest palindrome > a(n-1) such that a(1)*a(2)*...*a(n) - 1 is a prime.at n=37A051954
• a(0)=1; a(n) = sigma_2(n) + sigma_3(n).at n=35A092344
• 3-almost primes with semiprime digits (digits 4, 6, 9 only).at n=31A111494
• Numbers k such that k concatenated with k+8 gives the product of two numbers which differ by 9.at n=8A116216
• Numbers with digits 4 and 6 only.at n=34A284634
• Number of ways to choose a set partition of a strict integer partition of n.at n=35A294617
• a(n) = 4*(10^(2*n+1)-1)/9 + 2*10^n.at n=2A332146
• Numbers that are the sum of an emirp and its reversal in more than one way.at n=31A345408
• Irregular triangle T(n,k), n >= 0, 0 <= k <= 2*n+1, read by rows, where T(n,k) = [x^k] (1-x)^(n+1) * Sum_{k=0..n} (2*k+1)^n * x^k.at n=26A382289